The DPW Director or Planning Board may call for a design and
materials conference in order that the subdivider may be informed
as to the acceptability of the materials, methods and standards of
construction to be employed. The subdivider may be accompanied or
represented by his/her engineer or contractor, or both, at the conference.
[Amended 5-2-2000; 4-30-2002; 4-26-2016]
Notice shall be given to the DPW Director and to the Planning Board at least 10 days before the subdivider first commences construction in any subdivision, in addition to giving the notice called for in §
315-23A(2), below. No building permits will be issued until paved road (binder coarse), sidewalks berm, drainage systems, water and underground utilities are in place and inspected, and an approved driveway permit (issued by the DPW Director).
[Amended 4-26-2016]
Standards of construction not otherwise specified hereunder
shall be according to the Standard Specifications for Highways and
Bridges of the Massachusetts Department of Transportation (latest
edition).
[Amended 4-30-2002; 4-30-2002; 4-26-2016]
A. General requirements. Water system shall conform to the Water Department
rules and regulations.
(1) Responsibility. The subdivider shall be responsible for laying out
the water distribution system within the subdivision and its connections
to the Town mains, with the approval of the Board of Water Commissioners.
He shall provide, store, inspect and install all pipes and appurtenances
thereto, in accordance with these regulations. He shall make main
and service connections and maintain the installations, prior to acceptance
of the roads by the Town, in accordance with the rules and regulations
of the Board of Water Commissioners of the Town of Southwick. Permits
for private wells will be issued by the Board of Health before occupancy.
Well water shall be analyzed by a state certified laboratory.
(2) Inspection. The subdivider shall give notice to the DPW as required in §
315-20, above.
B. Materials.
(1) Handling and storage.
(a)
Pipe and accessories shall be handled with care to avoid damage.
Damaged pipe shall be rejected by the Water Commissioners.
(b)
The interior of all pipe and accessories shall be kept free
from dirt and foreign matter at all times. Valves and fittings shall
be kept drained and stored before installation in a manner protecting
them from damage due to freezing of trapped water.
(2) Pipe. All water pipe shall be ductile iron or AWWA approved poly
900 or better and shall conform to the latest revision of Federal
Specification SS-P-351 and shall be of a strength suitable for test
pressure of 525 pounds, and shall be of an approved type.
(3) Cast-iron fittings. Fittings for use with all pipe shall be cast
iron conforming to Federal Specifications WW-P-121 or to AWWA standard
of equivalent strength.
(4) Hydrants. Hydrants shall be of the type currently required by the
Water Commissioners or an accepted equivalent.
(5) Gate valves.
(a)
Gate valves shall be iron body, fully bronze mounted, with ends
to fit the type of pipe used. All buried valves shall have two-inch
square operating nuts and adjustable cast-iron valve boxes and covers.
(b)
Gate valves shall be left-hand opening and of one-hundred-fifty-pounds-per-square-inch
design. Valve boxes shall consist of cast-iron base, center section
and top section with cover marked "water." The top section shall be
adjustable for elevation.
(c)
Fittings and valves shall be at the required locations with
joints centered, spigots home and all valve stems plumb. Valve box
top sections shall be set to allow equal movement above and below
finished grade. The base shall be centered over the valve and shall
rest on compacted backfill. The top of the base section shall be approximately
on line with nut at top of valve stem, and the entire assembly shall
be plumb.
(6) Service connections. All house services shall be of Type K copper
tubing with necessary standard AWWA fittings as used and approved
by the Water Department.
C. Installation.
(1) Excavation and bedding. The trench shall be excavated to a depth
sufficient to give the pipe a cover of four feet six inches. Rock
shall be removed to a depth of six inches below the bottom of the
pipe and replaced with sand.
(2) Laying pipe and installing fittings.
(a)
Pipes shall be laid to the alignment and grade shown in the
definitive plan. Pipes shall be installed in accordance with the manufacturer's
installation instructions.
(b)
Tight bulkheads shall be used to prevent entry into the pipe
of dirt or water from the trench. Pipes may be angled from the straight
by a maximum of 3° at any joint. Ells will be used for larger
angles.
(3) Hydrant installation. Hydrants shall be installed in accordance with
the typical hydrant installations. Thrust blocks required. To the
proper bury line as shown on hydrant. Minimum of five cubic feet of
stone shall be placed around hydrant drains and then covered with
silt screen.
(4) Sterilization.
(a)
Before being placed in service the entire line shall be flushed
and chlorinated. Chlorine shall be applied in a manner approved by
the Water Department.
(b)
Water shall be fed slowly into the new line with chlorine applied
in amounts to produce a dosage of 40 to 50 parts per million. Mains
previously filled shall be treated to a concentrated dosage at intervals
along the line and retained for a period of eight hours or more. A
residual of not less than five parts per million shall be produced
in all parts of the line.
(c)
During the chlorination process all valves and accessories shall
be operated.
(d)
After chlorination, the water shall be flushed from the line
at its extremities and at all hydrants until the replacement water
tests are equal chemically and bacteriologically to those of the permanent
source of supply.
(5) Testing. The completed waterline shall be subjected to a water test
pressure of 200 pounds for a period of one hour. Any measurable leakage
shall be repaired. Tests shall be repeated following any repairs.
(6) Backfilling. Select material containing no lumps or stones over two
inches in diameter shall be used up to a level one foot above the
top of the pipe, and shall be tamped as placed. The remainder of the
backfill to the top of the trench shall be compacted by puddling,
tamping or rolling; it shall contain no stones weighing over 50 pounds.
Before backfilling, a 12-gauge vinyl coated copper tracer wire shall
be laid alongside of the new main. Tracer wire is to be brought up
at each gate box in a continuous loop, leaving enough excess wire
to pull up and run tests. Wire shall be brought up on the outside
of the lower box section and inside the upper section.
A fire alarm system may be installed in conformity with the
specifications of the Fire Department.
[Amended 6-23-2009; 4-26-2016]
Where, in the opinion of the Board, existing trees are inadequate,
shade trees no less than four inch caliper (at a point 4 and 1/2 feet
above the ground) and of such species as the Board may approve shall
be planted; such trees shall usually be spaced not more than 40 feet
apart, on both sides of the street, no closer than 5 feet or more
than 10 feet of the front lot line or as otherwise approved by the
Board, and planted in 1/2 cubic yard of loam. Trees shall be properly
wrapped and guyed in a manner to ensure their survival. In wooded
areas existing specimen shade trees shall be left in place where practicable
and lots in such areas shall not be cleared except as approved by
the Board.
Monuments with lead centers shall be installed on both sides
at all intersections of streets with each other, at all points of
change in direction of curvature of streets and at all such other
points as in the opinion of the Board may be necessary to show the
location of projected streets or easements. Monuments shall be of
four-inch-by-four-inch (4x4) stone or concrete, embedded 3 1/2
feet below and extending one inch above finished grade. Drill holes
shall not be installed until all road construction which would destroy
or disturb the monuments is completed. A letter from the designer
or surveyor shall be submitted certifying that the monuments have
been installed as indicated on the definitive plan.
The invalidity of one provision shall not invalidate any other
provision of these rules and regulations.